|
DN-1
The DN-1 was the United States Navy's first airship. Development Captain Mark L. Bristol, the second Director of Naval Aviation, supported the development of the dirigible in the anti-submarine role.Grossnik, Roy A. 1986 ''Kite Balloons to Airships . . . the Navy's Lighter-than-Air Experience'', Washington D.C.: Deputy Chief of Naval Operations (Air Warfare) and the Commander, Naval Air Systems Command, p. 3. Victor Herbster, Holden Richardson and LCDR Frank McCrary drew up the specifications for the DN-1. The contract was awarded on 1915 in aviation, 1 June 1915 to the Connecticut Aircraft Company of New Haven, Connecticut, New Haven, Connecticut, CT.Clark, Basil, ''The History of Airships'', New York: St Martin's Press, 1961, Library of Congress 64-12336, p. 146. The U.S. Navy had no experience with airships and it seems neither had any of the principals of Connecticut Aircraft Company. They were a lawyer who was the financial backer, an amusement park owner who acted as manag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Lawley & Son
George Lawley & Son was a shipbuilding firm operating in Massachusetts from 1866 to 1945. It began in Scituate, then moved to Boston. After founder George Lawley (1823–1915) retired in 1890, his son, grandson and great-grandson upheld the business, which continued until 1945. Of the hundreds of ships built by the Lawleys, highlights include the yachts ''Puritan'' and ''Mayflower'', respective winners of the 1885 and 1886 America's Cup. Brief history Founder George Lawley (1823–1915) was born to a "family of boatbuilders in Limehouse (London), England." He "began his career as an apprentice to Thomas and William Forrest while in England." In 1852 Lawley "moved his family to Massachusetts." He "found his first job in America with the East Boston ship designer, Donald McKay." Lawley worked for McKay from 1852 until 1866. Scituate, 1866–1874 In 1866, "Lawley and fellow cKayworker William Maybury opened a shipyard in Scituate ... for the construction of pleasure boats." Wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Donald Wills Douglas
Donald Wills Douglas Sr. (April 6, 1892 – February 1, 1981) was an American aircraft industrialist and engineer. An aviation pioneer, he designed and built the Douglas Cloudster. Though it failed in its intended purpose—being the first to fly non-stop across the United States—it became the first airplane with a payload greater than its own weight. He founded the Douglas Aircraft Company in 1921 (the company later merged with McDonnell Aircraft to form McDonnell Douglas Corporation). Under his leadership, the company became one of the leaders of the commercial aircraft industry, engaging in a decades-long struggle for supremacy with arch-rival William Boeing and his eponymous enterprise. Douglas gained the upper hand, particularly with his revolutionary and highly successful Douglas DC-3 airliner and its equally popular World War II military transport version, the C-47; at the start of the war, his airplanes made up 80% of all commercial aircraft in service. However, he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Airships Of The United States Navy
List of airships of the United States Navy identifies the airships An airship or dirigible balloon is a type of aerostat or lighter-than-air aircraft that can navigate through the air Powered aircraft, under its own power. Aerostats gain their lift from a lifting gas that is less dense than the surrounding a ... of the United States Navy by type, identification, and class. The fabric-clad rigid airships were treated as the equivalent of commissioned warships, and all others were treated more like aircraft. Rigid airships Metal rigid airships *ZMC-2, a metalclad-airship built by the Aircraft Development Corp - 1929-41 (scrapped) Fabric-clad rigid airships * - 1923-25 (lost due to structural failure in line squalls) *R38 (ZR-2), ZR-2 (see below) - 1921 (lost due to control inputs far in excess of structural strength) * - Only German-built Luftschiffbau Zeppelin, (''as LZ 126'') US Navy rigid airship, served 1924-39 (decommissioned 1932, and dismantled 1940) * ** - aircraft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WikiProject Aircraft
A WikiProject, or Wikiproject, is a Wikimedia movement affinity group for contributors with shared goals. WikiProjects are prevalent within the largest wiki, Wikipedia, and exist to varying degrees within sister projects such as Wiktionary, Wikiquote, Wikidata, and Wikisource. They also exist in different languages, and translation of articles is a form of their collaboration. During the COVID-19 pandemic, CBS News noted the role of Wikipedia's WikiProject Medicine in maintaining the accuracy of articles related to the disease. Another WikiProject that has drawn attention is WikiProject Women Scientists, which was profiled by '' Smithsonian'' for its efforts to improve coverage of women scientists which the profile noted had "helped increase the number of female scientists on Wikipedia from around 1,600 to over 5,000". On Wikipedia Some Wikipedia WikiProjects are substantial enough to engage in cooperative activities with outside organizations relevant to the field at issue. For e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Propeller (aircraft)
An aircraft propeller, also called an airscrew,Beaumont, R.A.; ''Aeronautical Engineering'', Odhams, 1942, Chapter 13, "Airscrews". converts rotary motion from an engine or other power source into a swirling slipstream which pushes the propeller forwards or backwards. It comprises a rotating power-driven hub, to which are attached several radial airfoil-section blades such that the whole assembly rotates about a longitudinal axis. The blade pitch may be fixed, manually variable to a few set positions, or of the automatically variable "constant-speed" type. The propeller attaches to the power source's driveshaft either directly or through reduction gearing. Propellers can be made from wood, metal or composite materials. Propellers are most suitable for use at subsonic airspeeds generally below about , although supersonic speeds were achieved in the McDonnell XF-88B experimental propeller-equipped aircraft. Supersonic tip-speeds are used in some aircraft like the Tupolev Tu-95, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1910s United States Patrol Aircraft
Year 191 ( CXCI) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Apronianus and Bradua (or, less frequently, year 944 '' Ab urbe condita''). The denomination 191 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Parthia * King Vologases IV of Parthia dies after a 44-year reign, and is succeeded by his son Vologases V. China * A coalition of Chinese warlords from the east of Hangu Pass launches a punitive campaign against the warlord Dong Zhuo, who seized control of the central government in 189, and held the figurehead Emperor Xian hostage. After suffering some defeats against the coalition forces, Dong Zhuo forcefully relocates the imperial capital from Luoyang to Chang'an. Before leaving, Dong Zhuo orders his troops to loot the tombs of the H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Footnotes
A note is a string of text placed at the bottom of a page in a book or document or at the end of a chapter, volume, or the whole text. The note can provide an author's comments on the main text or citations of a reference work in support of the text. Footnotes are notes at the foot of the page while endnotes are collected under a separate heading at the end of a chapter, volume, or entire work. Unlike footnotes, endnotes have the advantage of not affecting the layout of the main text, but may cause inconvenience to readers who have to move back and forth between the main text and the endnotes. In some editions of the Bible, notes are placed in a narrow column in the middle of each page between two columns of biblical text. Numbering and symbols In English, a footnote or endnote is normally flagged by a superscripted number immediately following that portion of the text the note references, each such footnote being numbered sequentially. Occasionally, a number between brack ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sturtevant Model 5
Sturtevant may refer to: * Aaron Paul Sturtevant (born 1979), better known as Aaron Paul, American actor * Albert D. Sturtevant (1894–1918), American naval officer * Albert Morey Sturtevant (1876–1957), American academic of Scandinavian philology * Alfred Sturtevant (1891–1970), American geneticist * Butler Sturtevant (1899–1971), American landscape architect * David Sturtevant Ruder (born 1929), American administrator and Professor of Law * Edgar H. Sturtevant (1875–1952), American linguist * Edward Lewis Sturtevant (1842–1898), American agronomist and botanist * Elaine Sturtevant (1930–2014), American artist * Grace Sturtevant, iris breeder * Harold Sturtevant (born c1918), United States Navy sailor, known for tearing down Nazi flag * John Cirby Sturtevant (1835–1912), American politician * Paul Allen Sturtevant (1898–1987), American inventor of the beam type torque wrench (1938) * William C. Sturtevant (1926–2007), American anthropologist * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jane's All The World's Aircraft
''Jane's All the World's Aircraft'' (now stylized Janes) is an aviation annual publication founded by John Frederick Thomas Jane in 1909. Long issued by Sampson Low, Marston in Britain (with various publishers in the U.S.), it has been published by Janes Information Services since 1989/90. The first volume's title referred to "airships" while all since have referenced "aircraft". After World War I, the format of the book shifted from an oblong ("landscape") format to the present "portrait" orientation. With the 1993/94 edition, the book was divided into two volumes that continue to appear annually. The main volume focuses on aircraft in production while the second book describes older aircraft and upgrades, both military and civil. While 2009 was the centennial year of ''Jane's All the World's Aircraft'', 2013 marked the 100th edition—the disparity due to disruptions (chiefly with volumes covering two years) during the two World Wars. Starting in 1969, Arco (New York) issued th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lift (force)
A fluid flowing around an object exerts a force on it. Lift is the component of this force that is perpendicular to the oncoming flow direction. It contrasts with the drag force, which is the component of the force parallel to the flow direction. Lift conventionally acts in an upward direction in order to counter the force of gravity, but it can act in any direction at right angles to the flow. If the surrounding fluid is air, the force is called an aerodynamic force. In water or any other liquid, it is called a hydrodynamic force. Dynamic lift is distinguished from other kinds of lift in fluids. Aerostatic lift or buoyancy, in which an internal fluid is lighter than the surrounding fluid, does not require movement and is used by balloons, blimps, dirigibles, boats, and submarines. Planing lift, in which only the lower portion of the body is immersed in a liquid flow, is used by motorboats, surfboards, windsurfers, sailboats, and water-skis. Overview A fluid flowing arou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pensacola, Florida
Pensacola () is the westernmost city in the Florida Panhandle, and the county seat and only incorporated city of Escambia County, Florida, United States. As of the 2020 United States census, the population was 54,312. Pensacola is the principal city of the Pensacola Metropolitan Area, which had an estimated 502,629 residents . Pensacola is the site of the first Spanish settlement within the borders of the continental United States in 1559, predating the establishment of St. Augustine by 6 years, although the settlement was abandoned due to a hurricane and not re-established until 1698. Pensacola is a seaport on Pensacola Bay, which is protected by the barrier island of Santa Rosa and connects to the Gulf of Mexico. A large United States Naval Air Station, the first in the United States, is located southwest of Pensacola near Warrington; it is the base of the Blue Angels flight demonstration team and the National Naval Aviation Museum. The main campus of the University of West F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robin D
Robin may refer to: Animals * Australasian robins, red-breasted songbirds of the family Petroicidae * Many members of the subfamily Saxicolinae (Old World chats), including: **European robin (''Erithacus rubecula'') ** Bush-robin **Forest robin **Magpie-robin ** Scrub-robin **Robin-chat, two bird genera ** Bagobo robin **White-starred robin **White-throated robin ** Blue-fronted robin **Larvivora (6 species) **Myiomela (3 species) * Some red-breasted New-World true thrushes (''Turdus'') of the family Turdidae, including: ** American robin (''T. migratorius'') (so named by 1703) ** Rufous-backed thrush (''T. rufopalliatus'') ** Rufous-collared thrush (''T. rufitorques'') ** Formerly other American thrushes, such as the clay-colored thrush (''T. grayi'') * Pekin robin or Japanese (hill) robin, archaic names for the red-billed leiothrix (''Leiothrix lutea''), red-breasted songbirds * Sea robin, a fish with small "legs" (actually spines) Arts, entertainment, and media Fictiona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
